Improvement in machines for manufacturing saws



3 Sheets-Sheet 1.

J. A. HOUSE.

MACHINE Fon 'MANUFAcTURING sAWs. No. 190,141. e

Patented May'1,1877.

WITNESSES Smeets-sheet z'. J. A. HOUSE.

MACHINE Non MANUFACTURING sAWs'.

No. 190,1141 Patented May1,1877.

WI TJV' ESSES I JV' VEJV TOR 2 .Imm EMA )Ik v By is .Attorneys Y A NJ'ETERS. FHPTuuTMOGHAPMER, WASHINGTON. D c.

s 'sheets-sheet 3.

1. .1 -HOUSE. MAHINE FOR MANUFACTURING SAW'S. 190,141.

Patented May1,1877.

VN. PETERS. FHGTO-LI'HDERAPHER. WASHINGTON. Dy C.

UNITED STATES NRIITENT GEETGE. i

JAMES A. HOUSE, OEBEIDGEPOET, CONNECTICUT.'

IMPRovEMENT IN MACHINES FOR MANuFAcTuRlNGsAws.

Specification forming part of Letters Patent No. 190,141, dated May 1, 18.77; application filed nprn 11, 1877.

saw'blades and my improvements resemble,

in some respects, the invention shown and described in an application for Letters Patent of the UnitedStates led simultaneously herewith by me, and entitled Improvements in the Art of Manufacturing Saw-Blades and in Apparatus therefor.77

The objects of my present invention are to cut several series of teeth at intervals upon `the edge of the blank, to form a number of sets of teeth in the same line upon a single long blank suitable `for cutting into lengths to make separate saw-blades; to insure Vthe regular feeding of the blank to thechisel or cutter; to cut the lblank into strips of the width desired to form a series of blades to firmly support the blank, and render it readily adjustable to' gage the width of strips to be cut, and the depth of the cuts of the chisel; and generally to improve the details of the mechanism.

The subject-matter claimed will hereinafter specifically be designated.

. In the accompanyingdrawings, my improvements are shown as embodied in thebest form now known to me. Obviously, however, some of the parts may beused without the others, and in machines differing somewhat from that therein shown and hereinafter described, and the details of construction be slightly modifled.

Figure 1 is laside elevation 5 Fig. 2, a plan or top view; Fig. 3,a bottom or inverted plan view, partly vin section, through the framesupports on the line l lof Fig. 1. Fig. 4 is a view, partly in elevation and partlyin vertical transverse section, on the line 2 2 of Fig. 1, showing the blank-feeding andy clamping devices; and Figs. 5, 6, 7, and 8 are diagrams, on an enlarged scale, showingthe method of cuttingthe teeth in the blades.

A stout frame, A, supported upon a proper base or supports, A1 A2, is provided with suitable bearings for a driving-shaft, B, at one end. This shaft is driven by powerin any suitable way, a hand-crank, b, for revolving it, being shownv in the drawings, for the sake of illustration only. vAcrank, a, upon the end of the shaft opposite/to thatupon which the hand-crank iss'ecured, drives a pitman, B', which is jointed at its outer end to one end of a rocking arm or vibrating lever, C, the opposite or lower end of which lever is suitably pivoted to render it capable of being rocked freely by the pitman. A cutter or chisel, C', secured to this vibrating lever-L at its upper end and projecting outward and downward therefrom, cuts the saw-teeth in the blank, as will hereinafter be explained.

The vibrating lever C is pivoted at d, near the free end of a vibrating arm, D, in turn pivoted at d to the under side of the frame, or to a down-hanger, D', projecting therefrom.

A strong spring, E, secured at one end to the I `bottom of the frame, bears upward at its opposite end upon a stud, e, on the arm D, thus acting with a tendency to force up this arm, and, consequently, the chisel -lever C. A roller, E, upon the outer'end of the arm D, is in this way constantly pressed against an annularcam, f, formed upon the projecting under side of a pinion, F, meshing with a worm wheel, Gr, turning with a shaft, G', mounted in suitable bearings g g' beneath the frame, This shaft G is shown by the drawings as driven from the driving-shaft B by a band, H; but it may be driven `by any suitable gearing. ley, H, on the driving-shaft to the pulley h on the worm-wheel shaft. The pinion F driven by the worm-wheel is fast upon an upright shaft, 1, turning in bearings .in the frame, to

which shaft is'likewise secured a pinion, I', meshing with a corresponding pinion, J, upon a shaft, J', parallel with ,the shaft I. This shaft J is mounted in suitable bearings in `aV bracketframe or housing, K, atthe side of the supporting-frame. Each shaft carries -a feeding `roller or disk, K1 K2, at its upper end, the adjacent surfaces of their peripheries nearly touching. The roller K1 can be brought This band passes from a puls Boomer. l

f close to or allowed to recede from the roller K2 byrneans of any suitable adjusting dev ice such, for instance, as the set-screw l, which passes through the bearing and abuts against the shaft at its point. The shaft is allowed sufficient lateral play in the bearing to admit of the requisite adjustment of the space between the rollers to suit the thickness of the blank to be acted upon. j y

An adjustable anvil or support, L, for the saw-blank and upon which the lower edge of the blank bears, is provided with a gage or indicator, L', (see Fig. 1,) by which to regulate the width of strip to be cut from the blank. rIhis anvilslides endwise through the blank guideway formed by a recess or opening, m, in the bracket-frameK, (or between the bracket and supporting-frame,) see Fig. 4, and the lower inclined edge of the an' vil rests and is rmly supported at or near one end upon a correspondingly inclined edge or shoulder, M, lat the bottom of the guideway. The opposite end ofthe anvil is sup-` ported and the anvil adjusted and held as desired by a screw cap or nut, m. The anvil may be slid endwise on the screw-stud, which passes through the elongated slot M. The blank is fed forward in the guideway or recess m, through which it is traversed end- Wise. A cutter, N, shown as composed of a revolving disk, mounted upon a stud, n, in an arm, 0, secured upon the top of the frame, serves to sever strips from the blank as they are being toothed by the passage of the blank to and past the tooth-cutter or chisel C'. An arm, Q, which may be turned out, if desired, is mounted upon the top of the bracket-frame K, and bears upon the side of the blank, thus preventing the curling or winding up of the blade as it is cut from the blank.

The chisel C (see Fig. 8) has a central'slit or opening, p, in its point or cutting end, of a width about corresponding to the thickness of the blank or saw-blade to be operated upon. As the chisel cuts into the edge of the blank the teeth are formed in part by raising or forcing up the metal of the-blank, the surplus metal, if any, crowded out or displaced by one cut being sheared off by the succeeding cut, the blank being fed forward during each retraction ofthe chisel a proper distance to be acted upon at itsnext descent.

Fig. 5 represents the chisel as making -a deep cut, all the surplus metal crowded backward and upward by one cut being removed by the next, and the points of the teeth terminating in line with the edge of the blank. In Fig. 6 the cut is not so deep, and the teeth as formed project slightly above the edge ofthe blank 5- and Fig. 7 represents a shallow cut, that which I prefer. In this last figure no metal is removed or cut off, the teeth being formed wholly by displacing or forcing up'- ward and backward the metal of the blank to form each tooth.

The formationfof rough edges or burrs at.

the sides o f the teethjis prevented, as `will bef end of the vibrating arm D, running alternately in contact with the recessed or cutaway part f1, and regular or raised portion f2 of the cam. When in contact with thev latter part ofthe cam the cutter is held down to fits work, so as to strikel the blank 'at each stroke,

but when yin contact with the depression or cut-away face of the cam the chisel is elevated.

In this manner toothless spaces are `le'ft at the ends of the blank, and between each series of teeth, to form the separate blades. Obviously the blank may be severed into lengths I to form blades by a cutter carried by one feedv roller, and working vin la recess or nick in. the

periphery of the other, or other automatic severing device may be employed.

It is manifest that a considerable saving in both time and labor is effected by cutting the teeth 1n series upon a single blank, 'as described, to form a number of saws at a single traverse of the blank, and that by fau-tomatically throwing the chisel out of operation at proper intervals, unnecessary wear and tearV upon the machinery which would result from the continuous action of the chisel throughout the length of the blank is avoided.

Obviously my improvements may be mod-ied to some extent without departing from the spirit of vmy invention. For instance, different cams, designed to throw the cutter out' of operation a-t longer or shorter periods, may

be employed, and the arm D adjusted length wise by means of a series of holes', through any one ofwhich the pivot d might be passed, so as to cause the roller E to-work upon the desired cam, or other well -known means of adjustment might be employed.

The anvil may be fed up automatically after the severing of-a strip. The blank may be r'un back by reversing the revolution of the dr-iv-` ing-shaft or` by hand. v

I claim as my invention-- 1. The combination, substantiallyV as *hereinb'efore set forth, yof a guideway for the sawblank, and a reciprocating chisel operating f upon the edge of the blank, and automatically thrown into and out of operation atintervals, to form series or different setslof teeth with intervening untoothed spaces, whereby a nuinv ber of blades are toothed at a single traverse of the blank. I

2. rlhe combination, 'substantially-as here-v inbefore set forth, fof the reciprocating chisel andthe saW-blank-feeding rollers by which the blank is presented to and firmly held against the thrust of the chisel reciprocating at an acute angledto the ledge of the blank above the rollers, to successively out the teeth thereon, as set forth.

the edge of the blank, and reciprocating above in the same plane as and atan inclination to the blank, and an anvil adjustable in the blank guideway, and supporting the blank.

6. The combination of the chisel reciprocating above the traversing Vsaw-blank, the rocking lever, to one end of which the chisel is secured, the vibrating arm, to which said lever is pivoted at its opposite end, and a cam operating upon said vibrating arm, these numbers being constructed and operating substantially as hereinbefore set forth, to automatically throw the chisel into and out of operation.

In testimony whereof I have hereunto subscribed my name.

JAMES ALFORD HOUSE. Witnesses:

CHARLES H. DIMOND, FREDK. L. HEARsoN. 

